In automatic speech recognition (ASR) systems immunity to additive noise may either be applied at the preprocessing stage or at the pattern matching stage. The Feature Selective Modeling (FSM) approach suggested in this paper is applied in the pattern matching stage, but in contrast to most existing methods, it is optimized on a model basis such that noise robust and phonetically descriptive pa...

The behavior of variable step-size least-mean-square (VSSLMS) algorithms is strongly affected by measurement noise. Thereby, aiming to maintain an adequate performance of these algorithms, their parameters must be adjusted whenever changes occur in the signal-to-noise ratio (SNR) of the adaptive system. A well-known VSSLMS algorithm based on error correlation provides a performance enhancement ...

This paper presents the conducted assessment of noise immunity request signal transmission channel and response for flight information secondary radar systems as part aircraft responders. The considered system is an open single-channel queuing with refusing due to action in intentional unintentional correlated uncorrelated (intra-system) interference ground-based receivers that receive, process...

This paper details a systematic method for significantly enhancing the noise margins of very fast threshold gates. The method is based on adding nonlinear terms determined from the Boolean form of the linearly separable (threshold) function to be implemented. It follows that linearly separable functions can be computed with high noise immunity by higher order perceptrons. Simulation results sup...

ADi erentially controlled monolithic LC-VCO along with a di erential charge pump are used to implement a di erential PLL for substrate noise immunity. The di erential VCO control is achieved with minimal increase in the power consumption and without sacri cing the tuning range. In a 0.5 m CMOS technology the measured VCO phase noise is -119dBc @1.0MHz and the tuning range is 26% of the 1.25GHz ...

Scaling of single-gate MOSFET faces great challenges in the nanometer regime due to the severe shortchannel effects that cause an exponential increase in the sub-threshold and gate-oxide leakage currents. Double-gate FinFET technology mitigates these limitations by the excellent control over a thin silicon body by two electrically coupled gates. In this paper a variable threshold voltage keeper...

The converging squares algorithm is a method for locating peaks in sampled data of 2 dimensions or higher. There are two primary advantages of this algorithm over other conventional methods. First, it is robust with respect to noise and data type. There are no empirical parameters to allow adjustment of the process, so results arc completely objective. Secondly, the method is computationally ef...

Air-mobile speech communication applications share robustness and noise immunity requirements with other mobile applications. The quality requirements are stringent, especially in the cockpit where air safety is involved. Based on these considerations, a decision was made to test an intermediate data rate such as 8.0 and 9.6 kb/s as proven technologies. A number of vocoders and codec technologi...